html,boby,div,span,applet,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,abbr,acronym,address,
big,cite,code,del,dfn,em,img,ins,kdb,q,s,samp,small,strike,strong,sub,sup,tt,var,b,u,i,center，dl,
dt,dd,ol,ul,li,fieldset,form,label,legend,table,caption,tbody,tfoot,details,embed,figure,figcaption,
footer,header,hgroup,menu,nav,output,ruby,section,summary,time,mark,audio,video
{
    margin: 0;
    padding: 0;
    border: 0;
}
article,aside,details,figcaption,figure,footer,header,hgroup,menu,nav,section{
        display: block;
    }
body{
    line-height: 1;
        }
ol,ul{
            list-style: none;
}
a:hover{
    text-decoration: none;
}
/*css reset*//*重启*/
/*nav start*/
.nav{
    width: 100%;
    position: absolute;
    text-align: center;
    opacity: 0.6;
    z-index:-999px;
   }
.nav a{
    display: block;
    width: 100%;
    /* color: #fff; */
    font-size: 30px;
    padding: 60px 0;
  -webkit-transition: all 0.6s ease-in 1s;/*谷歌*/
  -moz-transition: all 0.6s ease-in 1s;
  -o-transition: all 0.6s ease-in 1s;
  -ms-transition: all 0.6s ease-in 1s;/*微软*/
  transition: all 0.6s ease-in 1s;
}
.fixed .nav{
    height: 80px;
    background-color:#000;
    position: fixed;
    top:0;
    opacity: 1;
}
.fixed .nav a{
    padding: 20px 0;
    font-size: 24px;
}
.fixed .nav .nav-item{
    margin-top: 8px;
}
.fixed .back-home a.home-a{
    
}
.nav .about :hover{
    color: #959595;
}
.nav .works:hover{
    color: #27ae60; ;
}
.nav .skill:hover{
color: #2980b9;
}
.nav .contact:hover{
    color: #c039c0;
  }
 .back-home a.home-a{
    width: 100px;
    height: 100px;
    padding: 0;
    position: relative;
    left: -50px;
    top:30px;
    margin-left: 50%;
    text-indent: -999px;
    border: 4px solid #fff;
    background-image: url('../img/avatar.jpg');
    border-radius: 50%;
} 
/*nav end*/
.home{
    width: 100%;
    height: 100vh;
    background-image: url('../img/home-bg.jpg'); 
    background-size:cover ;

}
.wrap{
width: 100%;
height: 100vh;
position: relative;
}
.content-section{
   position: relative;
  top: 220px;
}
.content-section p{
    color:#fff;
    font-size: 30px;
    text-align: center;
}
.content-section p.welcome{
    margin: 60px 0;
}
.home .scroll-tip{
    display: block;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-image:url('../img/arrow.png') ; 
    position: absolute;
    left: -30px;
    bottom: 40px;
    margin-left: 50%;
    cursor: pointer;
    -webkit-transform: scale(0.8);
    -moz-transform: scale(0.8);
    -o-transform: scale(0.8);
    -ms-transform: scale(0.8);
    transform: scale(0.8);
    -webkit-transition: all 0.2s ease-in;
    -moz-transition: all 0.2s ease-in;
    -ms-transition: all 0.2s ease-in;
    -o-transition: all 0.2s ease-in;
    transition: all 0.2s ease-in;
}
.home .scroll-top:hover{
    -webkit-transform: scale(1);
    -moz-transform: scale(1);
    -o-transform: scale(1);
    -ms-transform: scale(1);
    transform: scale(1);
}
/*home end*/
.wrap.about{
    background-image: url(../img/bg-tile.png);
    }
.about-section{
        width: 960px;
        position: relative;
        top: 185px;
    }
.about-section .left-span{
margin-left: 350px;
}
/*图片效果*/
.bio-icon-1{
-webkit-animation:bio-icon-in .6s ease-out .7s 1 forwards;
-moz-animation: bio-icon-in .6s ease-out .7s 1 forwards;
-ms-animation: bio-icon-in .6s ease-out .7s 1 forwards;
-o-animation: bio-icon-in .6s ease-out .7s 1 forwards;
animation: bio-icon-in .6s ease-out .7s 1 forwards;
}
.bio-icon-2{
-webkit-animation:bio-icon-in .6s ease-out .7s 1 forwards;
-moz-animation: bio-icon-in .6s ease-out .7s 1 forwards;
-ms-animation: bio-icon-in .6s ease-out .7s 1 forwards;
-o-animation: bio-icon-in .6s ease-out .7s 1 forwards;
animation: bio-icon-in .6s ease-out .7s 1 forwards;
}
.bio-icon-3{
-webkit-animation:bio-icon-in .6s ease-out .7s 1 forwards;
-moz-animation: bio-icon-in .6s ease-out .7s 1 forwards;
-ms-animation: bio-icon-in .6s ease-out .7s 1 forwards;
-o-animation: bio-icon-in .6s ease-out .7s 1 forwards;
animation: bio-icon-in .6s ease-out .7s 1 forwards;
 }
@-webkit-keyframes bio-icon-in{
 0%{
    -webkit-transform: rotate(-60deg);
    margin-left: -30px;
    opacity: 0;
 }
 100%{
    -webkit-transform: rotate(0deg);
    margin-left: 0px;
    opacity: 1;
 }
}
@-moz-keyframes bio-icon-in{
 0%{
    -moz-transform: rotate(-60deg);
    margin-left:-30px;
    opacity: 0;
    }
100%{
    -moz-transform:rotate(0deg);
    margin-left: 0px;
    opacity: 1;
    }
}
@-ms-keyframes bio-icon-in{
 0%{
  -ms-transform: rotate(-60deg);
    margin-left: -30px;
    opacity: 0;
        }
 100%{
    -ms-transform: rotate(0deg);
    margin-left: 0px;
    opacity: 1;
       }
    }
@-o-keyframes bio-icon-in{
 0%{
    transform: rotate(-60deg);
    margin-left: -30px;
    opacity: 0;
        }
 100%{
     transform: rotate(0deg);
     margin-left: 0px;
     opacity: 1;
            }
        }
@keyframes bio-icon-in{
  0%{
     transform: rotate(-60deg);
     margin-left: -30px;
     opacity: 0;
           }
   100%{
     transform: rotate(0deg);
     margin-left: 0px;
     opacity: 1;
         }
}
/*文字效果*/
.bio-text-1{
opacity: 0;
-webkit-animation: bio-text-in .6s ease-out .7s 1 forwasrds;
-moz-animation: bio-text-in .6s ease-out .7s 1 forwards;
-ms-animation: bio-text-in .6s ease-out .7s 1 forwards;
-o-animation: bio-text-in .6s ease-out .7s 1 forwards;
animation: bio-text-in .6s ease-out .7s 1 forwards;
}
.bio-text-2{
opacity: 0;
-webkit-animation: bio-text-in .6s ease-out 1s 1 forwards;
-moz-animation: bio-text-in .6s ease-out 1s 1 forwards;
-ms-animation: bio-text-in .6s ease-out 1s 1 forwards;
-o-animation: bio-text-in .6s ease-out 1s 1 forwards;
animation: bio-text-in .6s ease-out 1s 1 forwards;
}
.bio-text-3{
opacity: 0;
-webkit-animation: bio-text-in .6s ease-out 1.3s 1 forwards;
-moz-animation: bio-text-in .6s ease-out 1.3s 1 forwards;
-ms-animation: bio-text-in .6s ease-out 1.3s 1 forwards;
-o-animation: bio-text-in .6s ease-out 1.3s 1 forwards;
animation: bio-text-in .6s ease-out 1.3s 1 forwards;
 }
@-webkit-keyframes bio-text-in{
0%{
  -webkit-transform:translate(500px,0);
  margin-left: -30px;
  opacity: 0;
    }
100%{
  -webkitt-ransform:translate(50px,0);
   margin-left: 0px;
   opacity: 1;
     }
  }
@-moz-keyframes bio-text-in{
0%{
   -moz-transform:translate(500px,0);
   margin-left: -30px;
   opacity: 0;
    }
100%{
    -moz-transform: translate(50px,0);
    margin-left: 0px;
    opacity: 1;
     }
  }
@-ms-keyframes bio-text-in{
0%{
   -ms-transform: translate(500px,0);
   margin-left: -30px;
   opacity: 0;
     }
100%{
     -ms-transform:translate(50px,0);
     margin-left: 0px;
     opacity: 1;
     }
  }
@-o-keyframes bio-text-in{
0%{
   -o-transform:translate(500px,0);
   margin-left: -30px;
   opacity: 0;
    }
100%{
     -o-transform:translate(50px,0);
     margin-left: 0px;
     opacity: 1;
    }
  }
@keyframes bio-text-in{
0%{
   transform: translate(500px,0);
   margin-left: -30ps;
  opacity: 0;
    }
100%{
     transform: translate(50px,0);
     margin-left: 0px;
     opacity: 1;
     }
      } 
#about .scroll-tip{
        display: block;
        width: 60px;
        height: 60px;
        border-radius: 50%;
        background-image:url('../img/arrow.png') ; 
        position: absolute;
        background-color: black;
        left: -30px;
        bottom: 40px;
        margin-left: 50%;
        cursor: pointer;
        -webkit-transform: scale(0.8);
        -moz-transform: scale(0.8);
        -o-transform: scale(0.8);
        -ms-transform: scale(0.8);
        transform: scale(0.8);
        -webkit-transition: all 0.2s ease-in;
        -moz-transition: all 0.2s ease-in;
        -ms-transition: all 0.2s ease-in;
        -o-transition: all 0.2s ease-in;
        transition: all 0.2s ease-in;
    }
#about .scroll-tip:hover{
        -webkit-transform: scale(1);
        -moz-transform: scale(1);
        -o-transform: scale(1);
        -ms-transform: scale(1);
        transform: scale(1);
    }
  /*about end*/
#works{
     background: #27ae60;
  }
.works-section{
position: relative;
top: 112px;
width: 960px;
margin: 0 auto;
}
.works-section .container{
    width: 100%;
    margin: 0;
    padding: 0;
}
.works-section .work-demo{
    width: 300px;
    height: 180px;
    float: left;
    margin-left: 25px;
    margin-bottom: 30px;
    overflow: hidden;
    position: relative;
    cursor: pointer;
}
.works-section .work-demo.first{
    margin-left: 0;
}
.works-section .work-demo img,
.works-section .works-info{
-webkit-transition: all 0.2s ease-in;
-moz-transition: all 0.2s ease-in;
-o-transition: all 0.2s ease-in;
-ms-transition:all 0.2s ease-in;
transition: all 0.2s ease-in;
}
.works-section .work-demo:hover img{
    transform: scale(1.5);
    overflow: hidden;
}
.works-section .work-demo:hover .works-info{
    top: 0;
}
.works-info{
    width: 300px;
    height: 180px;
    background-color: rgba(0,0,0, 0.8);
    position: absolute;
    top: 137px;
    padding: 10px;
    color: #fff;
    
}
.works-info h2{
    font-size: 21px;
    margin-bottom: 20px;
}
.works-info strong{
    display: inline;
    margin-bottom: 5px;
}
.more-link{
    color: #fff;
    display: block;
    padding: 10px 20px;
    width: 100px;
    text-align: center;
    margin: 0 auto;
    background: #3d3d3d;
    background: rgba(0,0,0,0.6);
}
.more-link:hover{
    color: #fff;
    background: #3d3d3d;
    background: rgba(0,0,0, 0.6);
}
#works .scroll-tip{
    display: block;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-image:url('../img/arrow.png') ; 
    position: absolute;
    left: -30px;
    bottom: 40px;
    margin-left: 50%;
    cursor: pointer;
    -webkit-transform: scale(0.8);
    -moz-transform: scale(0.8);
    -o-transform: scale(0.8);
    -ms-transform: scale(0.8);
    transform: scale(0.8);
    -webkit-transition: all 0.2s ease-in;
    -moz-transition: all 0.2s ease-in;
    -ms-transition: all 0.2s ease-in;
    -o-transition: all 0.2s ease-in;
    transition: all 0.2s ease-in;
}
#works .scroll-tip:hover{
    -webkit-transform: scale(1);
    -moz-transform: scale(1);
    -o-transform: scale(1);
    -ms-transform: scale(1);
    transform: scale(1);
}
/*works end*/
#skill{
    background-color:#2980b9 ;
}
#skill .scroll-tip{
    display: block;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-image:url('../img/arrow.png') ; 
    position: absolute;
    left: -30px;
    bottom: 40px;
    margin-left: 50%;
    cursor: pointer;
    -webkit-transform: scale(0.8);
    -moz-transform: scale(0.8);
    -o-transform: scale(0.8);
    -ms-transform: scale(0.8);
    transform: scale(0.8);
    -webkit-transition: all 0.2s ease-in;
    -moz-transition: all 0.2s ease-in;
    -ms-transition: all 0.2s ease-in;
    -o-transition: all 0.2s ease-in;
    transition: all 0.2s ease-in;
}
#skill .scroll-tip:hover{
    -webkit-transform: scale(1);
    -moz-transform: scale(1);
    -o-transform: scale(1);
    -ms-transform: scale(1);
    transform: scale(1);
}
.skill-section{
    width: 960px;
    position: relative;
    top: 98px;
    margin: 0 auto;    
}
.skill-section h1{
color: #fff;
margin-bottom: 40px;
font-size: 30px;
}
.skill-section ul{
    color: #fff;
}
.skill-section li{
    font-size: 18px;
    line-height: 2;
}
.fade{
    opacity: 0;
    position: relative;
    left: 10px;
}
.fade1{
    -webkit-transition: all 0.2s ease-in;
    -moz-transition: all 0.2s ease-in;
    -ms-transition: all 0.2s ease-in;
    -o-transition: all 0.2s ease-in;
    transition: all 0.2s ease-in;
}
.fade2{
    -webkit-transition: all 0.2s ease-in 0.2s;
    -moz-transition: all 0.2s ease-in 0.2s;
    -ms-transition: all 0.2s ease-in 0.2s;
    -o-transition: all 0.2s ease-in 0.2s;
    transition: all 0.2s ease-in 0.2s;
}
.fade3{
    -webkit-transition: all 0.2s ease-in 0.4s;
    -moz-transition: all 0.2s ease-in 0.4s;
    -ms-transition: all 0.2s ease-in 0.4s;
    -o-transition: all 0.2s ease-in 0.4s;
    transition: all 0.2s ease-in 0.4s;
}
.fade4{
    -webkit-transition: all 0.2s ease-in 0.6s;
    -moz-transition: all 0.2s ease-in 0.6s;
    -ms-transition: all 0.2s ease-in 0.6s;
    -o-transition: all 0.2s ease-in 0.6s;
    transition: all 0.2s ease-in 0.6s;
}
.fade-in.fade1,
.fade-in.fade2,
.fade-in.fade3,
.fade-in.fade4{
    opacity: 1;
    left: 0;
}
#contact{
    background-color:#c0392b;
    color: #fff;
}
#contact h2{
    color: #fff;
}
.contact-section{
   width: 960px;
   margin: 0 auto;
   position: relative;
   top: 173px;
}
.contact-section h1{
    margin-bottom: 30px;
    font-size: 36px;
}
.contact-section .left{
    float: left;
    width: 40%;;
}
.contact-section .right{
    float:right;
}
.contact-section li{
    line-height: 1.8;
    color: #dadada;
}
.contact-section .contact-info{
    margin-top: 20px;
}
.contact-section .fade{
    opacity: 1;
    position: relative;
    left: 10px;
}
.contact-section p{
    padding: 0 0 20px;
    line-height: 1.4;
    color: #dadada;
}
.fade1{
    -webkit-transition: all 0.2s ease-in;
    -moz-transition: all 0.2s ease-in;
    -ms-transition: all 0.2s ease-in;
    -o-transition: all 0.2s ease-in;
    transition: all 0.2s ease-in;
}
.fade2{
    -webkit-transition: all 0.2s ease-in 0.2s;
    -moz-transition: all 0.2s ease-in 0.2s;
    -ms-transition: all 0.2s ease-in 0.2s;
    -o-transition: all 0.2s ease-in 0.2s;
    transition: all 0.2s ease-in 0.2s;
}
.fade3{
    -webkit-transition: all 0.2s ease-in 0.4s;
    -moz-transition: all 0.2s ease-in 0.4s;
    -ms-transition: all 0.2s ease-in 0.4s;
    -o-transition: all 0.2s ease-in 0.4s;
    transition: all 0.2s ease-in 0.4s;
}
.fade-in.fade1,
.fade-in.fade2,
.fade-in.fade3{
    opacity: 1;
    left: 0;
}
#contact .scroll-tip{
    display: block;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-image:url('../img/arrow.png') ; 
    position: absolute;
    left: -30px;
    bottom: 40px;
    margin-left: 50%;
    cursor: pointer;
    -webkit-transform: scale(0.8);
    -moz-transform: scale(0.8);
    -o-transform: scale(0.8);
    -ms-transform: scale(0.8);
    transform: scale(0.8);
    -webkit-transition: all 0.2s ease-in;
    -moz-transition: all 0.2s ease-in;
    -ms-transition: all 0.2s ease-in;
    -o-transition: all 0.2s ease-in;
    transition: all 0.2s ease-in;
}
#contact .scroll-tip:hover{
    -webkit-transform: scale(1);
    -moz-transform: scale(1);
    -o-transform: scale(1);
    -ms-transform: scale(1);
    transform: scale(1);
}
